Coke oven door



Qct, 13, 1931. c. o-r'ro 1,827,329

. COKE OVEN DOOR Filed Nov. 26, 1928 INVENTOR ATTORNEY Patents 0... 13, 19 1 1,827,329

UNITED STATES PATENT OFFICE CARL OTTO, OF ESSEN-BUHR, GERMANY COKE OVEN DOOR Application filed November 26, 1928, Serial No. 321,826, and in Germany December 3, 1927.

The invention relates to self-tightening ple manner by a shaft on the uppermost recoke oven doors. inforcing profile irons of the elastic door The doors of the modern tall coke ovens plate, whilst another shaft is provided on the suffer from the heavy drawback of becomlower portion of the rigid profile iron struc- 5 ing warped and bent in particular toward the ture, which shaft is able toslide up and down 55 end of the carbonizingsperiod due to the un- ,in slots provided in the lower re-inforcing equal heating they are exposed to, so that profile irons of the elastic plate. In this manthere does no longer exist a gas-tight closure. ner any warping due to changes of tempera- The invention has for its object to entireture is absolutely compensated for. a

ly avoid this bending. and the leakage re- The rigid profile iron structure and there- 60 sulting therefrom, of coke oven doors and with the door is pressed on by screw bolts to secure a permanent absolutely gas-tight which rotatably engage the rigid structure closure. This object is obtained according and are mounted in transverse bolts engaging to the invention in a very simple manner the buckstays of the oven.

by the fact that the coke oven door is formed The individual sections of the elastic door 65,

by a flexible elastic sheet metal plate which plate have mounted on their inner side brackcovers the entire door opening and carries ets that carry the refractory heat-insulating on its outer side the sealing-means and is liner of the sections, which liner may further able to be pressed against the door frame be fixed thereon by screw bolts or the like.

in several individual sections. The tighten- In order to allow of the invention to bemore 70 ing of the door of this design may be efeasily understood, a preferred embodiment fccted either by directly putting an asbestos of same is illustrated by way of example in the cord on the face of the door frame or by drawings which accompany and form part lodging it in a movable cord frame and of this specification. In the drawings pressing it into the wedge-shaped groove Figure 1 1s a front elevation, partly in sec- 75 provide-d to receive the tightening means; tion, of the improved coke oven door,

or. by providing both these ways simultane- Figure 2 is a vertical section on line 22 ously. The sections of the elastic sheet metal of Figure 1, plate are pressed separately and may be re- Figure 3 is a horizontal section on line 33 3o inforced outside by means of separate profile of Figure 2, and

irons or the like of a length corresponding Figure 4 is a horizontal section on line to that of the respectiveplate sections. These 4-4: of Figure 2. profile irons may be so designed that one of Referring to these figures, a denotes the their legs together with the door frame forms elastic metal plate adapted to be pressed a gap of wedge-shaped cross section, so that against the door frame in several individual the possibility is afforded to stop up from sections. This plateain the form shown caroutside in case of need eventual leaking ries on its outer side a sealing means, e. g.

laces. an asbestos cord 6, which may be applied To the profile irons is attached a rigid either directly thereon or is lodged in a spe- 4 structure made of profile iron or the like cial guide. The several sections to be pressed which is articulated on the door plate by individually, of the elastic plate a are remeans of two or more shafts.'this structure inforced outside by individual profile irons carrying the pressing means, suchas wedges, c or the like the length of which corresponds screws or springs adapted to press the door to that of the sections to be pressed separatesections against the door frame. To drive ly. The uppermost and lowermost couple of 5 home these wedges, screws or springs, a drivprofile irons 0 has hingedly mounted on it ing means may be provided that is actuated each by a shaft (5 and 6, respectively, a rigid from a common manipulating device. This profile iron structure f, the lower shaft 6 beprofile iron structure that carries the pressing arranged on this structure in a manner ing means may be articulated in a very simsuch as to be able to slide up and down in slots e provided on the lower couple of reinforcing irons 0.

Therigid profile iron structure 7 carries the means for pressing the individual sections of plate a, these means consisting for example of screws 9 that act uponspecial strengthening ribs h of plate a. The rigid structure 7 and therewith the door is pressed against the door frame by means of screws k which are'rotatably mounted in transverse bolts 11 and in a corresponding nut 0 fixed on the rigid structure f. The bolts 2' engage the buckstays of the oven, as shown.

On their inner side turned toward the oven chamber the sections of the elastic plate a carry brackets m adapted to support the refractory heat-insulating liner n of the individual plate sections, which liner may further be fastened by additional screw bolts or the like.

When the door should be put in place, this I is done in a very simple manner by firstly all applying the bolts 2' engaging the buckstays, by means of the screws 7c and thereupon pressing against the door frame the individual plate sections from top to bottom by driving home the, pressing means, as wedges, screws orspr'ings. To withdraw the door, said latter pressing means are loosened first, and then the main screws 74 are removed.

The advantage afiforded by the invention primarily resides in the fact that eventual tensions occurring in thedoor are immediately compensated for. This advantage-is ob 'tained by the application of the described ,elastic sheet metal plate covering the entire door aperture, and by its articulated connection with the. rigid profile iron structure which carries the pressing means, and in particular by the lower hinge shaft being able to slide in slots. An warping and bending of the elastic door p ate is entirely avoided,

because the plate is pressed sectionally, the necessary freedom to elastic motion of the individual plate sections being secured by the refractory liner likewise being subdivided into corresponding sections.

Whatl claim and desire to secure by Let ters Patent, is

l. A coke oven door comprising in combination "a stationary door frame, an elastic sheet metal plate fitting thereto, sealing means arranged between said door frame and said plate, a plurality of reinforcing members successively fixed on the outside of said plate in its longitudinal direction, a rigid structure hingedly mounted on several of said re-inforcing members one of the hinges having clearance in the longitudinal direction of said plate, and means arranged on said structure for pressing said plate against said door frame in sections each corresponding in length to the respective re-inforcing member.

2. A coke oven door comprising in combination a stationary door frame, an elastic asaaaae sheet metal plate fitting thereto, sealing means arranged between said door frame and said plate, a plurality of re-inforcing mem bers successively fixed on the outside of said plate in its longitudinal direction, a rigid structure hingedly mounted on the uppermost and lowermost of said re-inforcing members, one of the hinges having clearance in the longitudinal direction of said plate, and means arranged on said structure for pressing said plate against said door frame in sections each corresponding in length to the respective re-inforcing member.

3. A coke oven door comprising. in combination a stationary door frame, an elastic sheet metal plate fitting thereto, sealing means arranged between said door frame and said plate, a plurality of re-inforcing members successively fixed on the outside of said plate in its longitudinal direction, a rigid structure hingedly mounted on the uppermost and lowermost of said reinforcing members said last-named hinge having clearance in the longitudinal direction of said plate, and means arranged on said structure for pressing said plate against said door frame in sections each corresponding in length to the respective re-inforcing member.

l. A coke oven door comprising in combination a stationary door frame, an elastic sheet metal plate fitting thereto, sealing means arranged between said door frame and said plate, a .plurality of re-inforcing members successively fixed on the outside of said plate in its longitudinal direction, a rigid structure hingedly mounted on the uppermost and lowermost of said re-inforcing members, saidlast-named hinge having clearance in the longitudinal direction of said plate, means arranged on saidstructure for pressing said plate against said door frame in sections each corresponding in length to the respective reinforcing member, and brackets mounted on the inner side of said plate and adapted to support heat-insulating liner sections corresponding to said pressing sections. 7

In testimony whereof, I have signed my name to this specification.

CARL OTTO. 

